7 members of Congress have disclosed 44 trades in Monolithic Power Systems, Inc. (MPWR) since 2014: 24 purchases worth about $216.51K and 20 sales worth about $184.51K. The most active was Ro Khanna, with 33 trades. The latest trade was made on Jul 27, 2026.
MPWR’s price and SPY’s, both as the change since the start of the range. A green triangle marks a day members bought MPWR, a red one a day they sold; hover for who and how much.
| # | Member | Trades | Buys | Sells | Bought (est.) | Sold (est.) | Net | Buys vs SPY | First Traded | Last Traded |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Ro KhannaD-CA | 33 | 17 | 16 | $160.51K | $152.51K | +$8.00K | +82.4% | Jan 8, 2020 | Jul 27, 2026 |
| 2 | Byron DonaldsR-FL | 4 | 2 | 2 | $16.00K | $16.00K | $0.00 | +146.9% | Dec 7, 2022 | Jun 5, 2026 |
| 3 | Michael GuestR-MS | 1 | 1 | 0 | $8.00K | $0.00 | +$8.00K | +8.5% | Oct 20, 2025 | Oct 20, 2025 |
| 4 | Robert P. Bresnahan, Jr.R-PA | 2 | 1 | 1 | $8.00K | $8.00K | $0.00 | +121.8% | Jan 13, 2025 | Apr 8, 2025 |
| 5 | Donna E. ShalalaD-FL | 1 | 0 | 1 | $0.00 | $8.00K | -$8.00K | – | Jun 24, 2019 | Jun 24, 2019 |
| 6 | James B. RenacciR-OH | 2 | 2 | 0 | $16.00K | $0.00 | +$16.00K | +1,577.7% | Dec 16, 2015 | Apr 1, 2016 |
| 7 | Bradley Scott SchneiderD-IL | 1 | 1 | 0 | $8.00K | $0.00 | +$8.00K | +3,347.6% | Jan 13, 2014 | Jan 13, 2014 |
| Owner | Type | Filing | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Ro KhannaD-CA | MPWRMONOLITHIC POWER SYSTEMS INC CMN | Dependent Child | Buy | $1K–$15K | Jul 27, 2026 | Aug 7, 2026 | 11d | -7.1% | -8.9% | |
| Byron DonaldsR-FL | MPWRMonolithic Power Systems, Inc. - Common Stock | Spouse | Sell (Partial) | $1K–$15K | Jun 5, 2026 | Jul 15, 2026 | 40d | -16.0% | -18.0% | |
| Byron DonaldsR-FL | MPWRMonolithic Power Systems, Inc. - Common Stock | Self | Sell (Partial) | $1K–$15K | Jun 5, 2026 | Jul 15, 2026 | 40d | -16.0% | -18.0% | |
| Ro KhannaD-CA | MPWRMONOLITHIC POWER SYSTEMS, INC. CMN | Dependent Child | Buy | $1K–$15K | Jun 18, 2026 | Jul 6, 2026 | 18d | -20.4% | -21.2% | |
| Ro KhannaD-CA | MPWRMONOLITHIC POWER SYSTEMS, INC. CMN | Dependent Child | Buy | $15K–$50K | May 22, 2026 | Jun 9, 2026 | 18d | -21.8% | -22.6% | |
| Ro KhannaD-CA | MPWRMONOLITHIC POWER SYSTEMS INC CMN | Spouse | Sell | $1K–$15K | Mar 10, 2026 | Apr 7, 2026 | 28d | +17.8% | +6.7% | |
| Ro KhannaD-CA | MPWRMONOLITHIC POWER SYSTEMS, INC. CMN | Spouse | Buy | $1K–$15K | Feb 5, 2026 | Mar 9, 2026 | 32d | +7.6% | -3.4% | |
| Ro KhannaD-CA | MPWRMONOLITHIC POWER SYSTEMS, INC. CMN | Dependent Child | Buy | $1K–$15K | Jan 23, 2026 | Feb 6, 2026 | 14d | +16.9% | +7.8% | |
| Ro KhannaD-CA | MPWRMONOLITHIC POWER SYSTEMS, INC. CM | Spouse | Sell | $1K–$15K | Jan 29, 2026 | Feb 6, 2026 | 8d | +5.1% | -3.2% | |
| Michael GuestR-MS | MPWRMonolithic Power Systems, Inc. - Common Stock | Dependent Child | Buy | $1K–$15K | Oct 20, 2025 | Nov 19, 2025 | 30d | +20.6% | +8.5% | |
| Ro KhannaD-CA | MPWRMONOLITHIC POWER SYSTEMS, INC. CMN | Spouse | Sell | $1K–$15K | Apr 23, 2025 | May 12, 2025 | 19d | +131.7% | +91.2% | |
| Robert P. Bresnahan, Jr.R-PA | MPWRMonolithic Power Systems, Inc. - Common Stock | Self | Buy | $1K–$15K | Apr 8, 2025 | May 8, 2025 | 30d | +173.3% | +121.8% | |
| Ro KhannaD-CA | MPWRMONOLITHIC POWER SYSTEMS, INC. CMN | Dependent Child | Sell | $1K–$15K | Mar 12, 2025 | Apr 10, 2025 | 29d | +113.4% | +78.8% | |
| Ro KhannaD-CA | MPWRMONOLITHIC POWER SYSTEMS, INC. CMN | Dependent Child | Buy | $1K–$15K | Feb 25, 2025 | Mar 6, 2025 | 9d | +91.0% | +64.4% | |
| Robert P. Bresnahan, Jr.R-PA | MPWRMonolithic Power Systems, Inc. - Common Stock | Joint | Sell | $1K–$15K | Jan 13, 2025 | Feb 13, 2025 | 31d | +111.8% | +82.4% |
Tip. Hover a row for the filing’s full asset text and comments; the PDF link opens the report itself.
7 members of Congress have disclosed 44 trades in Monolithic Power Systems, Inc. (MPWR) since 2014: 24 purchases worth about $216.51K and 20 sales worth about $184.51K. The most active was Ro Khanna, with 33 trades. The latest trade was made on Jul 27, 2026. Most active: Ro Khanna (33), Byron Donalds (4), Michael Guest (1), Robert P. Bresnahan, Jr. (2), Donna E. Shalala (1).
Since 2014 they have disclosed 24 purchases and 20 sales; by the midpoints of the disclosed ranges, about $216.51K bought and $184.51K sold, a net purchase of $32.00K.
Members of Congress report each trade over $1,000 within 45 days under the STOCK Act, with the amount as a range. The chart marks the days members traded MPWR on its price, against the S&P 500 over the same days.
Members of Congress disclose trades as dollar ranges, up to 45 days after the trade and sometimes later. Volumes use the midpoints of those ranges and are estimates; portfolio figures are a model built from the disclosed trades, not the members’ actual accounts. Not investment advice.